Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2287198222', 'doi': 'https://doi.org/10.1134/s102833581506004x', 'title': 'Escape velocity in general relativity', 'display_name': 'Escape velocity in general relativity', 'publication_year': 2015, 'publication_date': '2015-06-01', 'ids': {'openalex': 'https://openalex.org/W2287198222', 'doi': 'https://doi.org/10.1134/s102833581506004x', 'mag': '2287198222'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1134/s102833581506004x', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S97976655', 'display_name': 'Doklady Physics', 'issn_l': '1028-3358', 'issn': ['1028-3358', '1562-6903'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310320267', 'host_organization_name': 'Pleiades Publishing', 'host_organization_lineage': ['https://openalex.org/P4310320267', 'https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Pleiades Publishing', 'Springer Nature'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5101651905', 'display_name': 'V. V. Vasiliev', 'orcid': 'https://orcid.org/0000-0002-8196-5642'}, 'institutions': [{'id': 'https://openalex.org/I4210092536', 'display_name': 'Institute for Problems in Mechanics', 'ror': 'https://ror.org/00nj22y86', 'country_code': 'RU', 'type': 'facility', 'lineage': ['https://openalex.org/I1313323035', 'https://openalex.org/I4210092536', 'https://openalex.org/I4210164537']}], 'countries': ['RU'], 'is_corresponding': False, 'raw_author_name': 'V. V. Vasiliev', 'raw_affiliation_strings': ['Ishlinskii Institute for Problems in Mechanics, Russian Academy of Sciences, pr. Vernadskogo 101, Moscow, 117526, Russia'], 'affiliations': [{'raw_affiliation_string': 'Ishlinskii Institute for Problems in Mechanics, Russian Academy of Sciences, pr. Vernadskogo 101, Moscow, 117526, Russia', 'institution_ids': ['https://openalex.org/I4210092536']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5033399942', 'display_name': 'L. V. Fedorov', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210092536', 'display_name': 'Institute for Problems in Mechanics', 'ror': 'https://ror.org/00nj22y86', 'country_code': 'RU', 'type': 'facility', 'lineage': ['https://openalex.org/I1313323035', 'https://openalex.org/I4210092536', 'https://openalex.org/I4210164537']}], 'countries': ['RU'], 'is_corresponding': False, 'raw_author_name': 'L. V. Fedorov', 'raw_affiliation_strings': ['Ishlinskii Institute for Problems in Mechanics, Russian Academy of Sciences, pr. Vernadskogo 101, Moscow, 117526, Russia'], 'affiliations': [{'raw_affiliation_string': 'Ishlinskii Institute for Problems in Mechanics, Russian Academy of Sciences, pr. Vernadskogo 101, Moscow, 117526, Russia', 'institution_ids': ['https://openalex.org/I4210092536']}]}], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 1, 'citation_normalized_percentile': {'value': 0.580947, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 66, 'max': 73}, 'biblio': {'volume': '60', 'issue': '6', 'first_page': '241', 'last_page': '244'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11960', 'display_name': 'Theory of Relativity and Unified Field Theories', 'score': 0.9997, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11960', 'display_name': 'Theory of Relativity and Unified Field Theories', 'score': 0.9997, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10095', 'display_name': 'Cosmological Parameters and Dark Energy', 'score': 0.9986, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T13080', 'display_name': 'Finsler Geometry in Physics and Cosmology', 'score': 0.9962, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/einstein-gravity', 'display_name': 'Einstein Gravity', 'score': 0.51167}], 'concepts': [{'id': 'https://openalex.org/C165818556', 'wikidata': 'https://www.wikidata.org/wiki/Q213488', 'display_name': 'Geodesic', 'level': 2, 'score': 0.73529506}, {'id': 'https://openalex.org/C147452769', 'wikidata': 'https://www.wikidata.org/wiki/Q11452', 'display_name': 'General relativity', 'level': 2, 'score': 0.7178579}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.6958915}, {'id': 'https://openalex.org/C74650414', 'wikidata': 'https://www.wikidata.org/wiki/Q11397', 'display_name': 'Classical mechanics', 'level': 1, 'score': 0.6219744}, {'id': 'https://openalex.org/C16171025', 'wikidata': 'https://www.wikidata.org/wiki/Q863349', 'display_name': 'Singularity', 'level': 2, 'score': 0.57224894}, {'id': 'https://openalex.org/C136125196', 'wikidata': 'https://www.wikidata.org/wiki/Q742969', 'display_name': 'Schwarzschild metric', 'level': 3, 'score': 0.56988585}, {'id': 'https://openalex.org/C115304011', 'wikidata': 'https://www.wikidata.org/wiki/Q72755', 'display_name': 'Schwarzschild radius', 'level': 3, 'score': 0.52769494}, {'id': 'https://openalex.org/C124017977', 'wikidata': 'https://www.wikidata.org/wiki/Q11412', 'display_name': 'Gravitation', 'level': 2, 'score': 0.5039548}, {'id': 'https://openalex.org/C149324446', 'wikidata': 'https://www.wikidata.org/wiki/Q43514', 'display_name': 'Theory of relativity', 'level': 2, 'score': 0.48647186}, {'id': 'https://openalex.org/C95086748', 'wikidata': 'https://www.wikidata.org/wiki/Q1068747', 'display_name': 'Kerr metric', 'level': 4, 'score': 0.47121754}, {'id': 'https://openalex.org/C156682239', 'wikidata': 'https://www.wikidata.org/wiki/Q1006428', 'display_name': 'Two-body problem in general relativity', 'level': 5, 'score': 0.4588296}, {'id': 'https://openalex.org/C176217482', 'wikidata': 'https://www.wikidata.org/wiki/Q860554', 'display_name': 'Metric (unit)', 'level': 2, 'score': 0.4552757}, {'id': 'https://openalex.org/C104114177', 'wikidata': 'https://www.wikidata.org/wiki/Q79782', 'display_name': 'Motion (physics)', 'level': 2, 'score': 0.4216472}, {'id': 'https://openalex.org/C37914503', 'wikidata': 'https://www.wikidata.org/wiki/Q156495', 'display_name': 'Mathematical physics', 'level': 1, 'score': 0.34770668}, {'id': 'https://openalex.org/C134306372', 'wikidata': 'https://www.wikidata.org/wiki/Q7754', 'display_name': 'Mathematical analysis', 'level': 1, 'score': 0.304622}, {'id': 'https://openalex.org/C44715290', 'wikidata': 'https://www.wikidata.org/wiki/Q13012237', 'display_name': 'Numerical relativity', 'level': 3, 'score': 0.25312036}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.18856594}, {'id': 'https://openalex.org/C165748483', 'wikidata': 'https://www.wikidata.org/wiki/Q6058963', 'display_name': 'Introduction to the mathematics of general relativity', 'level': 4, 'score': 0.16753021}, {'id': 'https://openalex.org/C21547014', 'wikidata': 'https://www.wikidata.org/wiki/Q1423657', 'display_name': 'Operations management', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C162324750', 'wikidata': 'https://www.wikidata.org/wiki/Q8134', 'display_name': 'Economics', 'level': 0, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1134/s102833581506004x', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S97976655', 'display_name': 'Doklady Physics', 'issn_l': '1028-3358', 'issn': ['1028-3358', '1562-6903'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310320267', 'host_organization_name': 'Pleiades Publishing', 'host_organization_lineage': ['https://openalex.org/P4310320267', 'https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Pleiades Publishing', 'Springer Nature'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 6, 'referenced_works': ['https://openalex.org/W1614972592', 'https://openalex.org/W1646540449', 'https://openalex.org/W2004167990', 'https://openalex.org/W2041324666', 'https://openalex.org/W2125977346', 'https://openalex.org/W3112919152'], 'related_works': ['https://openalex.org/W799717315', 'https://openalex.org/W4311532794', 'https://openalex.org/W4296012609', 'https://openalex.org/W3183872353', 'https://openalex.org/W3104931317', 'https://openalex.org/W2950400809', 'https://openalex.org/W2574139644', 'https://openalex.org/W2041468494', 'https://openalex.org/W1978395617', 'https://openalex.org/W1666882194'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2287198222', 'counts_by_year': [{'year': 2023, 'cited_by_count': 1}], 'updated_date': '2024-09-08T00:24:53.004618', 'created_date': '2016-06-24'}